EXAMIANS
The ratio of outlet whirl velocity to blade velocity in case of centrifugal compressor is called
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The closed cycle in gas turbines
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The air entry velocity m a rocket as compared to aircraft is
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There is a certain pressure ratio (optimum) for a gas turbine at which its thermal efficiency is maximum. With increase in turbine temperature, the value of pressure ratio for the peak efficiency would
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The ratio of the indicated power to the shaft power or brake power of the motor or engine required to drive the compressor, is called
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Reciprocating air compressor is best suited for
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It is not possible to use closed gas turbine cycle in aeronautical engines because
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In gas turbines, high thermal efficiency is obtained in
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The thrust of a jet propulsion power unit can be increased by
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If p₁, is the pressure of air entering the L.P. cylinder and p₂ is the pressure of air leaving the L.P. cylinder (or inter-cooler pressure), then the ratio of cylinder diameters for a single acting, two stage reciprocating air compressor with complete intercooling is given by (where D₁ = Dia. of L.P. cylinder, and D₂ = Dia. of H.P. cylinder)
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